A Mandelbulb renderer written in C and GLSL. SDL2 and GLAD are used to initialize a window and OpenGL function pointers respectively. The meat of this renderer is in shaders/fshader.frag
The mouse wheel sets the zoom-rate. It zooms in on where your mouse is. Press F12 to take a screenshot. Press ESC to exit the renderer. (The images produced from screenshotting will be flipped.)
The Mandelbulb in all of its beauty
Here is the Mandelbox, lurking in the dark
The incredible blog posts Distance Estimated Fractals